Որոնման արդյունքները - Schexnayder, Clifford J.

Moving the earth excavation equipment, methods, safety, and cost ‌ Schmitt, Robert L., Schexnayder, Clifford J., Cohen, Aaron B., Nichols, Herbert L. 1908-, Day, David A. 1924-

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Moving the earth excavation equipment, methods, safety, and cost ‌ Schmitt, Robert L., Schexnayder, Clifford J., Cohen, Aaron B., Nichols, Herbert L. 1908-, Day, David A. 1924-

Construction planning, equipment, and methods ‌ Peurifoy, Robert Leroy 1902-